<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button id="btn">按钮</button>
    <script>
        const btn = document.getElementById('btn')
        function fn(){
            console.log(1);
        }
        function debounce(func,delay){
            let id
            return function(){
                clearTimeout(id)
                id = setTimeout(()=>{
                    func()
                },delay)
            }
        }
        const refresh = debounce(fn,1000)
        btn.addEventListener('click',function(){
            refresh()
        })
        
    </script>
</body>
</html>